发布到Restful api？

Question

我正在编写以下代码以发布到Web API.但是,我得到了编译器错误client.PostAsJsonAsync.错误消息是

Error       This expression was expected to have type
    Async<'a>    
but here has type
    Tasks.Task<HttpResponseMessage> 

码:

[<CLIMutable>]
type Model = { ..... }

let PostIt params = async {
    use client = new HttpClient()
    let content = { ..... } // a Model built from params
    let! response = client.PostAsJsonAsync("http://...", content) // Error!
    return response }

在F#中处理Restful API的最佳方法是什么？我正在使用Fsharp.Data.

Answer 1

看起来你需要使用Async.AwaitTask:

let! response = Async.AwaitTask (client.PostAsJsonAsync("http://...", content))

或使用|>运营商:

let! response = client.PostAsJsonAsync("http://...", content) |> Async.AwaitTask